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Keywords: Pore Fluid
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Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0246
... ABSTRACT: We experimentally investigate the effect of the pore fluid on AE in four sandstone plugs cored from a homogeneous slab. These plugs were fully saturated with brine, mineral oil, and hexane, while one of them remained dry. AE level was highest in the hexane-saturated sample, smaller...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1753
... contact with injected CO 2 . Through diffusion, and concentration gradient, the injected CO 2 mixes with the caprock pore fluid, modifying its pH from basic to acid. Different experiments are performed to demonstrate the effect of CO 2 on mechanical properties of the North Sea Draupne shale caprock. The...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1256
.... In the end, the authors gave the trend of deviator stress-angle effected by water-oil content, then the relative analysis were given from the facts of capillary pressure, hydration reaction and pore pressure. Some conclusions were reached: (1) Due to the pore fluids, the maximum and minimum slip...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0235
... ABSTRACT: Biot’s effective stress law has been proved to be very useful in describing the effect of pore fluid pressure on the mechanical response of rocks and understanding the poroelastic effects in unconventional shale or mudstone formations. In this work, six mudstone source rock samples...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-310
... understanding of shale thermal, mechanical and physiochemical processes that take place during drilling operation would be inevitable to suppress the risks and future hazards. input data upstream oil & gas stability mud activity distribution curve mud weight shale pore fluid wellbore...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-584
... applying different loading conditions based on three different equations. We demonstrated the measurement methods for both permeable rocks (Berea sandstone and Indiana limestone) and relatively impermeable rocks (Westerly granite and Asmari limestone). Different pore fluids (mineral oil, de-ionized water...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-551
... the surrounding salt rock mass due to the nonexcludable infiltration of pore fluids from the waste. The Lux/Wolters constitutive model was developed not only specially for this question, but also for other purposes at Chair in Waste Disposal and Geomechanics of Clausthal University of Technology...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-468
... increasing back pressure. flow in porous media reservoir geomechanics full saturation back pressure specimen increment compressibility porous rock coefficient saturation Reservoir Characterization Fluid Dynamics calculation Pore Fluid application Upstream Oil & Gas pore pressure...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-404
... porous medium wellbore integrity concentration Reservoir Characterization relation coefficient analytical solution formulation Pore Fluid mud-shale interface coordinate system equation shale formation boundary condition mole fraction application brittleness integration Drilling ARMA...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-523
... Reservoir Characterization equilibrium reservoir geomechanics drainage Upstream Oil & Gas reservoir formation use static compressibility sandstone Pore Fluid moduli deformation poroelastic material dynamic moduli elastic moduli linear elastic model geomechanical model time...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-339
... direction and polarization on the direction of applied stress. The sensitivity of the velocity gradient is investigated through given changes xternal stress and pore pressure. The impact of pore fluid type is tested on samples fully saturated with brine and kerosene, as well as dry samples. All our tests...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-397
... dynamic moduli are higher than static moduli. Dynamic moduli depend on the conditions of the measurement, especially on the effective pressure and pore fluid; and static moduli depend on details of the loading experiments [1]. However, in literature it is common that any differences between static and...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-469
... contribute significantly to the amount of gas stored in the adsorbed phase within a given volume of rock. Preliminary measurements of the effect of pore fluid on the viscous creep behavior suggest that carbon dioxide increases the measured amount of creep by a factor of 2-3. 1. INTRODUCTION With the...
Proceedings Papers

Paper presented at the 44th U.S. Rock Mechanics Symposium and 5th U.S.-Canada Rock Mechanics Symposium, June 27–30, 2010
Paper Number: ARMA-10-453
... grain contacts [4], and chemical dissolution followed by precipitation which is affected by the pore fluid compo- sition [5]. These theories apply to a static system of solid and fluid leaving a subject which seems not to have been covered: the aspect of the moving fluid relative to the solid. The most...
Proceedings Papers

Paper presented at the 43rd U.S. Rock Mechanics Symposium & 4th U.S. - Canada Rock Mechanics Symposium, June 28–July 1, 2009
Paper Number: ARMA-09-104
... Abstract Observed reductions in the permeability of propped hydraulic fractures are examined by considering the role of mechanical stresses and the chemistry of pore fluids at elevated temperatures as agents of proppant diagenesis. Stress-enhanced dissolution of proppant increases the density...
Proceedings Papers

Paper presented at the 43rd U.S. Rock Mechanics Symposium & 4th U.S. - Canada Rock Mechanics Symposium, June 28–July 1, 2009
Paper Number: ARMA-09-118
... Abstract The contribution of the pore fluid pressure to the reduction of the effective stress during loading of fully saturated high porosity chalk (>40% porosity) has often been assumed to be represented by an effective stress coefficient close to unity. This assumption entails that the...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-197
... Engineering department of the Faculté Polytechnique de Mons (Faculty of Engineering, Mons - Belgium), we developed a new triaxial system to reproduce great depth conditions. Starting with a triaxial cell equipped with pore fluid provisions, a heating jacket and temperature control system, we designed and...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-278
... shear Pore Fluid Reservoir Characterization strength wet model granite fracture Simulation numerical simulation loading University ARMA 08-278 Experimental analysis of confined shear fracturing of saturated granite and numerical analysis by 2D hydro-mechanical coupled bonded-particle...
Proceedings Papers

Paper presented at the Alaska Rocks 2005, The 40th U.S. Symposium on Rock Mechanics (USRMS), June 25–29, 2005
Paper Number: ARMA-05-814
... consolidation phase Pore Fluid saturation reservoir geomechanics Petrobras procedure backpressure cu triaxial test sample saturation Reservoir Characterization pore pressure MPa Portuguese Rio de Janeiro transducer undrained triaxial test triaxial test Upstream Oil & Gas...
Proceedings Papers

Paper presented at the DC Rocks 2001, The 38th U.S. Symposium on Rock Mechanics (USRMS), July 7–10, 2001
Paper Number: ARMA-01-0343
... ABSTRACT: In modeling the initiation of coal and gas outbursts, the coal seam is treated as a gas reservoir, and the mechanical responses of the seam to mining-induced changes in pore fluid pressure and effective stress fields are studied within the framework of poroelastoplasticity theory...

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